GC-MS Determination of Nitrogen Compounds in Shale Oil

Sample of shale oil was extracted by acid-alkali abstersion and organic solvent extraction; separated and identified by GC-MS. The relative contents (in %) of the components were found by the method of normalization. Totally 104 compounds were separated among which 87 nitrogen containing components were identified and determined There were 64 basic nitrogen compounds, including three groups with their relative contents as following: pyridine (18.7%), quinolines (50.0%) and aniline (7.6%); and there were 23 nonbasic basic nitrogen compounds, including three groups with their relative contents as following: pyrrole (6.5%), indole (11.5%) and carbazole (1.7%).